title: 3-(Ammonio-methyl)-pyridinium bis-(perchlorate).
abstract: In the title molecular salt, C6H10N2 (2+)·2ClO4 (-), the Cl-O bond lengths [anion 1: 1.369 (3)-1.415 (3); anion 2: 1.420 (2)-1.441 (2) Å] and the O-Cl-O angles [anion 1: 105.4 (2)-111.8 (4); anion 2: 107.8 (1)-110.3 (1)°] indicate a slight distortion of the perchlorate anions from regular tetra-hedral symmetry. In the crystal, the components are linked into columns along the a-axis direction via N-H⋯O and C-H⋯O hydrogen bonds, with stacks of the organic mol-ecules being surrounded by stacks of perchlorate anions.
authors.affiliation: Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia.
authors.forename: Imen
authors.initials: I
authors.lastname: Bayar
authors.forename: Riadh
authors.initials: R
authors.lastname: Kefi
authors.forename: Pedro
authors.initials: P
authors.lastname: Sidonio Pereira da Silva
authors.forename: Manuela
authors.initials: M
authors.lastname: Ramos Silva
authors.forename: Cherif
authors.initials: C
authors.lastname: Ben Nasr